The History Channel takes a fascinating look at radar technology, from its accidental discovery to the many ways the Allies used it in World War II. From MIT's "Radlab" and the tall radar towers built along England's southern coast to warn of German bombers to U.S. submarines' use of radar to fight the Japanese in the Pacific, see how radar revolutionized the way wars are fought, including moving women to the front lines for the first time.

In 1888, German physicist Heinrich Rudolf Hertz discovered electromagnetic radiation. His experiments with radio waves formed the basis of what would become one of the most important warfare technologies of the twentieth century.

In this in-depth program, discover the history behind radar technology, from Hertz's early experiments with radio waves to Christian Hülsmeyer's historic 1904 invention of the "telemobiloscope," which was designed to prevent the collision of ships at sea. During World War II, radar (originally an acronym for "radio detection and ranging") not only helped win the famous Battle of Britain, but they brought Allied women into the frontlines for the first time as they worked to track and destroy Hitler's Luftwaffe.

Using detailed color reenactments, archival footage, and interviews with historians and leading experts in radar technology, The History Channel® provides the ultimate look at the significant contributions of radar, past and present.